I had gestational diabetes during my second pregnancy, which was a wake up call. I didn't want to develop full blown T2 diabetes later on. I held on to my testing kit and checked my fasting blood sugar occasionally post birth - it showed pre-diabetes. This was enough motivation to get things sorted. I knew I couldn't keep going forever with no lifestyle/diet changes without developing T2D and other illnesses so the sooner I did something, the better it would be. Also I wanted to look better and have an easier time choosing clothes, tbh! I've really enjoyed this part of losing weight.
Having had some experience of a better diet while managing my blood sugar during pregnancy (I was able to stay at the same weight from 28 weeks to birth, meaning I effectively lost weight) I knew how to go about it. Just cut out snacks, reduced portion sizes and carbs e.g. one slice of toast instead of two or three, one sandwich not two, the recommended portion size of pasta or rice.
I either skip breakfast if I'm not properly hungry or have some full fat plain yoghurt with a handful of mixed nuts and seeds. Then for lunch, a three egg omelette with lots of veg (I use frozen chopped peppers, onions, mushrooms, spinach etc as I'm looking after my 4yo and 1yo and only have one hand free usually) or a piece of toast with a big salad and a protein element e.g. small amount of cheese or hummus, or tuna. Soup's good too.
Dinner, lots of veg with lean protein and some rice, noodles, or pasta usually. Wholegrain carbs as much as possible. Processed food as little as possible. Fill up on vegetables. Drink only tea, coffee, water and wine 
but I need to cut down on the latter as I've hit a plateau and was probably drinking too much anyway.
Don't eat unless you really are hungry. This changes your attitude to eating. And try to make your calories count, nutritionally. It's a permanent change you're making, not a short term weight loss plan. I still have things like mince pies and chocolate but take it into account and don't go overboard.
I'm also doing some weights when I can - ten minute Youtube arm, back and squats workouts and trying to get as much movement as possible into my daily life which is hard when in charge two small children. Things like standing/walking at playgroups instead of sitting down and joining in at soft play!
End result, since last April I've lost around 4.5 stone, going from BMI 37 to BMI 28. Still one stone to go to top end of BMI but I'd like to go down another stone after that. I feel so much lighter, more energetic, healthier and definitely look better.
I see you only have 2 stone to go. You can definitely do it! You'll feel better for it. Make sure you get enough sleep as well